import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login'
import Home from '../components/Home'
import Welcome from '../components/Welcome'
import Users from '../components/user/Users'
import Rights from '../components/power/Rights'
import Roles from '../components/power/Roles'
import Cate from '../components/goods/Cate'
import Params from '../components/goods/Params'


Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect:'/login'
  },
  {
    path:'/login',
    component:Login
  },
  {
    path:'/home',
    component:Home,
    redirect:'/welcome',
    children:[
      {
        path:'/welcome',
        component:Welcome
      },
      {
        path:'/users',
        component: Users
      },
      {
        path:'/rights',
        component:Rights
      },
      {
        path:'/roles',
        component:Roles
      },
      {
        path:'/categories',
        component:Cate
      },
      {
        path:'/params',
        component:Params
      }

    ] }]

const router = new VueRouter({
  routes,
})

// 挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  // to将要访问的路径
  // from表示从那个路径来的
  // next是一个函数，表示放行
  // next（）放行 next（‘login’）强制跳转

  if(to.path==='/login') return next();
  // 获取token
const tokenStr=window.sessionStorage.getItem('token');
if(!tokenStr) return next('/login')
  next()
})

export default router
